Saw-swaging device



(No-Model.) 7

- G. CAMPBELL.

SAW SWAGING DEVIGE.

No. 415,614. Patented Nov. 19, 1889.

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UNITED STATES PATENT OFFICE.

COLLlNGlVOOD CAMPBELL, OF \VEST BAY CITY, MICHIGAN. v

SAW-SWAGING DEVICE.

SPECIFICATION forming part of Letters Patent N0. 415,614, dated November19, 1889.

Application fil February 7, 1889. Serial No. 298,969. (No model.)

To all whom it may concern:

Be it known that I, OOLLINGWOOD CAMP- BELL, a citizen of the UnitedStates, residing at \Vest Bay City, in the county of Bay and State ofMichigan, have invented certain new and useful Improvements in Saw-SWagin g Machines, of which the following is a specification, reference beinghad therein to the accompanying drawings.

This invention relates to new and useful improvem en ts in saw-swagingmachines, an d the invention is designed to form an improvement onLetters Paten t- No. 355,379, dated January 4, 1887 5 and the inventionconsists in the improved construction and arrangement of differentparts, as described and claimed in said Letters Patent, and in theaddition of a guide, all as more fully hereinafter described, and shownin the accompanying drawings, in which- Figure 1 is a perspective viewofmy improved machine. Fig. 2 is a vertical central cross-section in theplane of the handle actuating the die, and showing in dotted lines itsoperation on a saw-tooth. Fig. 3 is a detached perspective view of theimproved dieholder and die screwed therein. Fig. at is a verticalcentral longitudinal section through said die-holder in the axis of thedie. Fig. 5 is a detached perspective view of the stationary die. Fig. 6is a detached elevation of the movable clamp-j aw.

A is the stationary die-holder, formed substantially of a solid block ofcast-iron of rectangular shape and provided with a recess B upon itsunder side.

C is a movable cylindrical dieholder, journaled in the stationary dieholder A transversely through the recess B therein. This die-holder isprovided upon opposite ends with the studs D, formed concentrically withthe parts 0, projecting sufficiently to conveniently attach thereto thebifurcated ends D of the actuating handle or lever E of the movabledie-holder. The cylindrical die-holder. C is provided with alongitudinal opening extending through it parallel to its axis, but toone side of it, and in the center of. this openingis loosely secured thecylindrical die F, free to revolve on its axis. Upon these ends this dieis confined in its position by the cylindrical cheek-pieces G, which intheir turn are confined by the set-screws ll, adj ustably secured intothe outer ends of the opening. The oylindrical die-holder C is partiallycut away in the center to form a transverse slot 1, cor-responding withthe slot B in the die-holder A, to expose a portion of the face of thedie F across the slot I and with the ends of the die remaining in thesolid portion thereof.

K is an anvil or bed die secured in the top of the holder and projectingwith its inclined face L into proximity to the die F. This anvil-die isprovided with a shank M, which passes through an adj Listing-nut N, secured in the holder, and is secured therein by means of a screw 0. Thisanvil-die is compressed upon its sides to play freely into the slot llof the cylindrical die-holder into proximity with the die F, and it maybe adjusted in relation thereto by means of the nut N. If thecylindrical die-holder C is removed, the anvil K may be removed also byunscrewing the nut O. The holder A is provided with devices for clampingit to the saw, and these consist of a stationary jaw P and a movable jawP, projecting from opposite sides into the recess B. The movable jaw Pis secured free to revolve on its axis upon the clamping-screw R, thehead S of which projects to one side of the holder A and is providedwith an actuatinglever S, set out sufficiently to clear the lever E.

T is a detachable saw-guide secured to the front face of the handle.This saw-guide is provided with a vertical slot U, which correspondswith the slot B in the handle, and itis adjustably secured to the frontface of the handle by means of the set-screws V, engaging into socketsV, and adjusting-screws IV are arranged to bear against the under sideof the handle upon opposite sides of the slotB to hold the slotguide inits adjustable position.

. In practice the machine is placed upon the saw in the relation shownin Fig. 2, with the saw-tooth to be operated upon projecting between theremovable die F and the anvil-die K, the face of which bears against theback of the tooth. To obtain this relation of the anvil-die to the toothfor the different saws to which my machine may be applied, the sawguideT has to be adjusted up and down to bear with the top T of its verticalslot 011 the back of the preceding saw-tooth, as shown in Fig. 2. Toprevent any accidental displacement during the operation of swagingwhich necessarily tends to displace the saw-guideT, the adj listing-nutsW have to be screwed up firmly against the under side of the holder A.To effect the swaging, the operator takes hold with one hand of thelever S and with the other hand of the lever E and pushes them inopposite directions to each other. By apply-.

ing suitable power the lever S tightens the clamp, while the lever Ecarries the die F in a circular path (owing to its eccentric position in"the die-holder) toward the point of the sawtooth, producing thereby theswaging of the tooth, provided the dies are properly adjusted. It willbe seen at the same time that the die F, being loosely secured to thedie-holder,wil1 revolve therein and thereby be. prevented from wearingout under the operation of swaging. Furthermore, by means of the end adjustmentsprovided for it in the die-holderits Working position inrelation to the saw-tooth may be changed. By confining it between cheeksG it is rapidly adjusted longitudinally, readily removed for the purposeof replacing it, and adapted to revolve more freely in its bearings.

What I claim as my invention is 1. In a saw-swage, the adjustableswageguide T,provided with slot U and set-screws IV, substantially asand for the purpose specified.

side of its center and a transverse slot in the middle of its lengthcorresponding with a transverse slot in the holder, a cylindrical dieloosely secured in said opening and extending across the transverseslotin said die-holder, cheek-pieces on opposite sides of said die, andadjusting-screws in the ends of said longitudinal opening, substantiallyas described, and for the purpose set forth.

In a saw-swage, a clamping device consisting of the stationary jaw P andthe movable jaw P, and the movable jaw being provided with a spindle,the actuating-screw R, in which said spindle is journaled, and theactuating-lever S, secured to that screw,sub stantially as described.

t. In a saw-swage', a swage-guide T, provided with a vertical slot U,sockets V, set-screws V, and adjusting-screws WV, substantially as shownand described, and for the purpose specified.

In testimony whereof I affix my'signature, in presence of two witnesses,thisl5th day of December, 1888.

coLLINewooD CAMPBELL.

Witnesses:

J. PAUL MAYER, P. M. l-IURLBERT.

